+1-800-504-5897 Live Chat Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Vltor RE-10/A5SR-A5 Receiver Extension Condition: New, $6.29 Off w/ Free S&H

Vltor RE-10/A5SR-A5 Receiver Extension, Black RE-10/A5SR
Vltor RE-10/A5SR-A5 Receiver Extension, Black RE-10/A5SR
1 of 1 images
Vltor RE-10/A5SR-A5 Receiver Extension, Black RE-10/A5SR

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
If this buffer tube was applied to the AR 10 platform would it require a carbine length buffer or the A5 buffer Expert Answer

The Vltor RE-10/A5SR-A5 Receiver Extension is designed to use the VLTOR A5 spring and buffer kit only which is sold separately. The spring and buffer kit includes an A5 Stainless buffer, A5 buffer spring, Vltor lockplate, and vltor castle nut. You can find it using the following link:
https://www.opticsplanet.com/vltor-a5-spring-and-buffer-kit.html

by Ethan, Gear Expert, April 4, 2022
See 3 More Answers
I am building an Aero LR308. What is the advantage of this A5 extension tube over the 7 position A5 tube? Expert Answer

Can you please email us at techsales@opticsplanet.com with the two specific parts you are looking at. If its an A5 tube then there will most likely be no benefit as the 7 position A5 tube is their flagship.

by Armando R., Gear Expert, March 9, 2019
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Great receiver extension. by fat raptor, Verified Owner, May 12, 2018
This is a very high quality receiver extension. I would recommend getting the a5 tube over this one though because you can close a stock further on it. had very good threads on it and a nice snug fit with my stock.
6/6 found this helpful
Helpful Positive Review
Vltor a5 buffer by John, February 11, 2021
Great fit and finish. Yes it’s more than a standard buffer but my ar pistol runs smoooooth now! I fit it with a vltor h2 buffer and I couldn’t be happier. Shipping from optics planet took a bit longer than normal, but hey, what’s normal these days?
2/2 found this helpful
Helpful Positive Review
A must for LR308’s or 6.5’s by MEAT, Verified Owner, April 10, 2023
Don’t do what I did when first being suggested in using the A5 buffer system. Had several companies that all said to find a 308 carbine buffer. You need an AR15 buffer with a AR10 build. 24 inch Rainer MOD2 308 ultramatch barrel, Aero upr/lwr, Sprinc...
Read More...
5/5 found this helpful
Helpful Positive Review
buffer tube extension by CHRIS URSINY, April 17, 2020
good item to upgrade your ar-15 lower to a vltor a5 type or style, this is slightly longer than a milspec carbine buffer tube so you need to use vltor a5 buffer and rifle length spring to operate correctly.
3/3 found this helpful
Read All 4 Reviews
Condition:
New

Code: 24Y-RBT-VLRRRE-RE-10-A5SR

MPN: RE-10/A5SR

UPC: 1550344

List: $62.95Save 10%
$56.66

Product Info for Vltor RE-10/A5SR-A5 Receiver Extension

The Receiver Extension is a six position receiver extension designed to work with the VLTOR A5 system. This receiver extension is designed to work with Mil-Spec dimensioned M4/AR-15 type collapsible stocks. It also can be utilized as a replacement receiver extension for the AR-10 rifle. • Six position receiver extension made from impact extruded 7075 T6 aluminum • Hard coat anodized • Positions are numbered and are visible through the witness hole on most stocks • Snag-free sliding of the buttstock• Receiver is designed to use the VLTOR A5 spring and buffer kit only which is sold separately. • Receiver extension is Mil-Spec dimensioned and will only accept M4 type Mil-Spec buttstocks • Weighs 4.2 ozimage

Specifications for Vltor RE-10/A5SR-A5 Receiver Extension:

Manufacturer: VLTOR
Condition: New

Package Contents:

  • Vltor RE-10/A5SR-A5 Receiver Extension

Vltor RE-10/A5SR-A5 Receiver Extension Orderable Models

List of Orderable Models

  • Vltor RE-10/A5SR-A5 Receiver Extension, Black , MPN: RE-10/A5SR , UPC: 1550344 , Code: 24Y-RBT-VLRRRE-RE-10-A5SR
Compare (0)
1 item has been added
Add at least two items to compare
Last updated 2026-10-09 UTC.